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M27V512-100N1TR Scheda tecnica(PDF) 2 Page - STMicroelectronics |
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M27V512-100N1TR Scheda tecnica(HTML) 2 Page - STMicroelectronics |
2 / 16 page M27V512 2/16 Figure 2B. LCC Pin Connections Warning: NC = Not Connected, DU = Don’t Use AI00733B A8 A10 17 A0 NC Q0 A6 A3 A2 A1 A5 A4 9 A9 1 A11 Q6 Q7 32 M27V512 NC GVPP E 25 Figure 2A. DIP Pin Connections A1 A0 Q0 A7 A4 A3 A2 A6 A5 A13 A10 A8 A9 Q7 A14 A11 GVPP E Q5 Q1 Q2 Q3 VSS Q4 Q6 A12 A15 VCC AI01907 M27V512 8 1 2 3 4 5 6 7 9 10 11 12 13 14 16 15 28 27 26 25 24 23 22 21 20 19 18 17 DEVICE OPERATION The operating modes of the M27V512 are listed in the Operating Modes table. A single power supply is required in the read mode. All inputs are TTL levels except for GVPP and 12V on A9 for Elec- tronic Signature. Read Mode The M27V512 has two control functions, both of which must be logically active in order to obtain data at the outputs. Chip Enable (E) is the power control and should be used for device selection. Output Enable (G) is the output control and should be used to gate data to the output pins, indepen- dent of device selection. Assuming that the ad- dresses are stable, the address access time (tAVQV) is equal to the delay from E to output (tELQV). Data is available at the output after a delay of tGLQV from the falling edge of G, assuming that E has been low and the addresses have been sta- ble for at least tAVQV-tGLQV. Standby Mode The M27V512 has a standby mode which reduces the supply current from 10mA to 10 µA with low voltage operation VCC ≤ 3.6V, see Read Mode DC Characteristics table for details.The M27V512 is placed in the standby mode by applying a CMOS high signal to the E input. When in the standby mode, the outputs are in a high impedance state, independent of the GVPP input. Figure 2C. TSOP Pin Connections A1 A0 Q0 A5 A2 A4 A3 A9 A11 Q7 A8 GVPP E Q5 Q1 Q2 Q3 Q4 Q6 A13 A14 A12 A6 A15 VCC A7 AI00734B M27V512 28 1 22 78 14 15 21 VSS A10 |
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